EP1446509B9 - Duplexedelstahl - Google Patents

Duplexedelstahl Download PDF

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Publication number
EP1446509B9
EP1446509B9 EP02707947A EP02707947A EP1446509B9 EP 1446509 B9 EP1446509 B9 EP 1446509B9 EP 02707947 A EP02707947 A EP 02707947A EP 02707947 A EP02707947 A EP 02707947A EP 1446509 B9 EP1446509 B9 EP 1446509B9
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EP
European Patent Office
Prior art keywords
percent
duplex stainless
stainless steel
present
stainless steels
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02707947A
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English (en)
French (fr)
Other versions
EP1446509B1 (de
EP1446509A1 (de
EP1446509A4 (de
Inventor
David S. Bergstrom
John J. Dunn
John F. Grubb
William A. Pratt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ATI Properties LLC
Original Assignee
ATI Properties LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by ATI Properties LLC filed Critical ATI Properties LLC
Priority to DK10075573.5T priority Critical patent/DK2280089T3/en
Priority to EP10075573.5A priority patent/EP2280089B1/de
Publication of EP1446509A1 publication Critical patent/EP1446509A1/de
Publication of EP1446509A4 publication Critical patent/EP1446509A4/de
Publication of EP1446509B1 publication Critical patent/EP1446509B1/de
Application granted granted Critical
Publication of EP1446509B9 publication Critical patent/EP1446509B9/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite

Definitions

  • the present invention relates generally to duplex stainless steels.
  • the present invention relates to duplex stainless steels that can be an economical alternative to certain known duplex stainless steels, while also providing improved corrosion resistance relative to certain austenitic stainless steels, such as the Type 304, 316 and 317 austenitic stainless steels.
  • the present invention is also directed to a method of manufacturing the duplex stainless steels of the invention.
  • the duplex stainless steels of the present invention find application in, for example, corrosive environments and into articles of manufacture, such as, for example, strip, bar, plate, sheet, castings, pipe or tube.
  • Duplex stainless steels are alloys that contain a microstructure consisting of a mixture of austenite and ferrite phases. Generally, they exhibit certain characteristics of both phases, along with relatively higher strength and ductility.
  • Various duplex stainless steels have been proposed, some of which are described in U.S. Patent Nos. 3,650,709 , 4,340,432 , 4,798,635 , 4,828,630 , 5,238,508 , 5,298,093 , 5,624,504 , and 6,096,441 as well as JP-A 10 102 206 .
  • duplex alloys had moderate resistance to general corrosion and chloride stress corrosion cracking, but suffered a substantial loss of properties when used in the as-welded condition.
  • AL 2205 US S31803 and/or 32205
  • This duplex stainless steel is a nominal 22% chromium, 5.5% nickel, 3% molybdenum, and 0.16% nitrogen alloy that provides corrosion resistance in many environments that is superior to the Type 304, 316 and 317 austenitic stainless steels (Unless otherwise noted all percentages herein are weight percentages of total alloy weight).
  • AL 2205 which is a nitrogen-enhanced duplex stainless steel that imparts the metallurgical benefits of nitrogen to improve corrosion performance and as-welded properties, also exhibits a yield strength that is more than double that of conventional austenitic stainless steels.
  • This duplex stainless steel is often used in the form of welded pipe or tubular components, as well as a formed and welded sheet product in environments where resistance to general corrosion and chloride stress corrosion cracking ("SCC") is important. The increased strength creates opportunities for reduction in tube wall thickness and resists handling damage.
  • AL 2205 has been widely accepted by tube and pipe end users, particularly as a low cost replacement to Type 316 stainless steel when SCC is a concern. This is due, in large part, to the fact that AL 2205 is significantly more resistant to crevice corrosion than the Type 316 and Type 317 austenitic stainless steels. This superior resistance to chloride-ion crevice corrosion is illustrated in the table below, which shows the results of ASTM Procedure G48B using a 10% ferric chloride solution.
  • the 10% ferric chloride solution referred to is by weight for the hexahydrate salt and is equivalent to an approximately 6% by weight solution of the anhydrous ferric chloride salt. Crevice Corrosion Data in 10% Ferric Chloride Alloy Temperature of Onset of Crevice Corrosion Type 316 27°F (-3°C) Type 317 35°F (2°C) AL 2205 68°F (20°C)
  • the extraordinary corrosion resistance (and other properties) of AL 2205 may be greater than is required in some applications.
  • AL 2205 would provide an acceptable technical solution, it may not be an economical replacement alloy for Type 304 stainless steel.
  • the higher cost of AL 2205 is due primarily to the amounts of the alloying elements nickel (nominal 5.5%) and molybdenum (nominal 3%).
  • Type 316 or Type 317 austenitic stainless steels and may have a lower production cost than the commonly used AL 2205 duplex stainless steel.
  • the invention provides a ferritic-austenitic stainless steel in accordance with claim 1 of the appended claims.
  • the present invention relates to a duplex stainless steel exhibiting corrosion resistance and having reduced amounts of the alloying elements nickel and molybdenum relative to other duplex stainless steels, including AL 2205.
  • the duplex stainless steel comprises, in weight percent up to 0.06 percent carbon; 15 percent to 25 percent chromium; 1 percent to less than 2.5 percent nickel; up to 3.75 percent manganese; greater than 0.12 percent to 0.35 percent nitrogen; up to 2 percent silicon; up to 1.5 percent molybdenum; up to 0.5 percent copper; up to 0.2 percent cobalt; up to 0.05 percent phosphorus; up to 0.005 percent sulphur, 0.001 percent to 0.0035 percent bunion; iron and incidental impurities.
  • the duplex stainless steel comprises, in weight percent, up to 0.06 percent carbon; 17 percent to less than 20 percent chromium; 1 percent to less than 2,5 percent nickel; up to 3.75 percent manganese; greater than 0.12 percent up to 0.35 percent nitrogen; up to 2 percent silicon; up to 1.5 percent molybdenum; up to 0.5 percent copper, up to 0.2 percent cobalt; up to 0.05 percent phosphorous; up to 0.005 percent sulfur, 0.001 percent to 0.0035 percent boron; iron and incidental impurities.
  • the present invention also relates to articles of manufacture such as, for example, strip, bar, plate, sheet, castings, tubing, or piping fabricated from or including the duplex stainless steels of the present invention.
  • the articles formed of the duplex stainless steels of the present invention may be particularly advantageous when intended for service in chloride containing environments.
  • the present invention relates to methods for making duplex stainless steels.
  • a duplex stainless steel having a chemistry as previously described is provided and is subject to processing, including solution annealing and cooling.
  • the steel may be further processed to an article of manufacture or into any other desired form.
  • the present invention relates to duplex stainless steels characterized by including reduced amounts of the alloying elements nickel and molybdenum relative to certain known duplex stainless steels, including AL 2205.
  • the duplex stainless steel of the present invention contains, in weight percent: less than 2.5 percent nickel and up to 1.5 percent molybdenum.
  • the duplex stainless steels of the present invention include the austenite and ferrite phases, preferably each in the range of between 20% and 80% by volume in the annealed condition.
  • Embodiments of the duplex stainless steels are weldable, formable materials that may exhibit greater corrosion resistance than the Type 304, 316 and 317 austenitic stainless steels.
  • the duplex stainless steels of the present invention may include various other alloying elements and additives as are known in the art.
  • Embodiments of the duplex stainless steels of the invention may be less costly to produce than the commonly used AL 2205 alloy and certain other duplex stainless steels, because of a lower content of alloying elements, particularly nickel and molybdenum.
  • the duplex stainless steels of the present invention provide a stable austenite phase (with respect to deformation incluced martensite) and the desired level of corrosion resistance.
  • the nickel and molybdenum content of certain embodiments of the present invention are compared to AL 2205. Amounts of Alloying Elements Ni and Mo (In Weight Percent) Alloying Element AL 2205 Present Invention Ni 5.5% nominal 1% - less than 2.5% Mo 3% nominal up to 1.5%
  • the duplex stainless steels of the present invention will exhibit pitting/crevice corrosion resistance that is significantly greater than the Type 304, 316 and 317 austentic stainless steels. It is expected, however, that the steels of the present invention will have reduced corrosion resistance, but greater stretch formability than AL 2205 due to the lower content of nickel and molybdenum in the steels of the present invention. Thus, the duplex stainless steel of the present invention may be particularly advantageous as a lower cost alternative to AL 2205 in less demanding applications in which AL 2205 is now used.
  • the duplex stainless steel may comprise, in weight percent, up to 0.03% C, at least 17% Cr, at least 1.5% Ni, up to 2% Mn, up to 1% Si, 1% to 1.5% Mo, and 0.001% to 0.0035% B.
  • the duplex stainless steel of the present invention may be less costly to produce than AL 2205 and other duplex stainless steels.
  • the present invention also relates to articles of manufacture such as, for example, strip, bar, plate, sheet, casings, tubing, and piping composed of or including the duplex stainless steels of the present invention.
  • the article of manufacture is composed of or includes a duplex stainless steel comprising, in weight percent up to 0.06 percent carbon; 15 percent to 25 percent chromium; 1 percent to less than 2.5 percent nickel; up to 3.75 percent manganese; greater than 0.12 percent up to 0.35 percent nitrogen; up to 2 percent silicon; up to 1.5 percent molybdenum; up to 0.5 percent copper; up to 0.2 percent cobalt; up to 0.05 percent phosphorous; up to 0.005 percent sulfur; 0.001 percent to 0.0035 percent boron; iron and incidental impurities.
  • the article of manufacture is composed of or includes a duplex stainless steel comprising, in weight percent up to 0.06 percent carbon; 17 percent to less than 205 percent chromium, 1 percent to less than 2,5 percent nickel; up to 3.75 percent manganese; greater than 0.12 percent up to 0.35 percent nitrogen; up to 2 percent silicon; up to 1.5 percent molybdenum; up to 0.5 percent copper; up to 0.2 percent cobalt; up to 0.05 percent phosphorous; up to 0.005 percent sulfur, 0.001 percent to 0.0035 percent boron; iron and incidental impurities.
  • a duplex stainless steel comprising, in weight percent up to 0.06 percent carbon; 17 percent to less than 205 percent chromium, 1 percent to less than 2,5 percent nickel; up to 3.75 percent manganese; greater than 0.12 percent up to 0.35 percent nitrogen; up to 2 percent silicon; up to 1.5 percent molybdenum; up to 0.5 percent copper; up to 0.2 percent cobalt; up to 0.05 percent phosphorous; up to 0.005 percent
  • the present invention relates to a method for making the claimed duplex stainless steel.
  • the duplex stainless steel is subsequently solution annealed and then cooled.
  • a duplex stainless steel comprising, in weight percent: up to 0.06 percent carbon; 15 percent to 25 percent chromium; 1 percent to less than 2.5 percent nickel; up to 3.75 percent manganese; greater than 0.12 percent up to 0.35 percent nitrogen; up to 2 percent silicon; up to 1.5 percent molybdenum; up to 0.5 percent copper, up to 0.2 percent cobalt; up to 0.05 percent phosphorous; up to 0.005 percent sulfur, 0.001 percent to 0.0035 percent boron; iron and incidental impurities is provided.
  • the duplex stainless steel is solution subsequently annealed and cooled.
  • a duplex stainless steel comprising, in weight percent: up to 0.06 percent carbon; 17 percent to less than 20 percent chromium; 1 percent to less than 2.5 percent nickel; up to 3.75 percent manganese; greater than 0.12 percent to 0.35 percent nitrogen; up to 2 percent silicon; up to 1.5 percent molybdenum; up to 0.5 percent copper; up to 0.2 percent cobalt; up to 0.05 percent phosphorus; up to 0.005 percent sulphur; 0.001 percent to 0.0035 percent boron; iron and incidental impurities is provided.
  • the steel is subsequently solution annealed, and cooled.
  • the steels may be further processed using known techniques to provide an article of manufacture, such as those mentioned above, or into any other desired form.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Gas Separation By Absorption (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Heat Treatment Of Articles (AREA)
  • Coating With Molten Metal (AREA)
  • Glass Compositions (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Claims (10)

  1. Ferritisch-austenitischer nichtrostender Duplexstahl, umfassend - in Gew.- %:
    bis zu 0,06 % Kohlenstoff,
    15 bis 25 % Chrom,
    1 bis weniger als 2,5 % Nickel,
    bis zu 3,75 % Mangan,
    mehr als 0,12 und bis zu 0,35 % Stickstoff,
    bis zu 2 % Silicium,
    bis zu 1,5 % Molybdän,
    bis zu 0,5 % Kupfer,
    bis zu 0,2 % Cobalt,
    bis zu 0,05 % Phosphor,
    bis zu 0,005 % Schwefel,
    0,001 bis 0,0035 % Bor,
    als Rest Eisen und beiläufige Verunreinigungen.
  2. Nichtrostender Duplexstahl nach Anspruch 1, der bis zu 0,03 % Kohlenstoff umfasst.
  3. Nichtrostender Duplexstahl nach Anspruch 1 oder Anspruch 2, der 17 bis 20 % Chrom umfasst.
  4. Nichtrostender Duplexstahl nach einem der vorhergehenden Ansprüche, der 1,5 bis weniger als 2,5 % Nickel umfasst.
  5. Nichtrostender Duplexstahl nach einem der vorhergehenden Ansprüche, der mehr als 0,12 und bis zu 0,20 % Stickstoff umfasst.
  6. Nichtrostender Duplexstahl nach einem der vorhergehenden Ansprüche, der bis zu 1 % Silicium umfasst.
  7. Nichtrostender Duplexstahl nach einem der vorhergehenden Ansprüche, der 1 bis 1,5 % Molybdän umfasst.
  8. Produktgegenstand, der einen nichtrostenden Duplexstahl gemäß einem der vorhergehenden Ansprüche umfasst.
  9. Gegenstand nach Anspruch 8, wobei der Gegenstand aus der Gruppe von Bandstahl, Stangen, Blech, Feinblech, Gussteilen, Rohrsträngen und Rohrmaterial ausgewählt ist.
  10. Verfahren zur Herstellung eines ferritisch-austenitischen nichtrostenden Duplexstahls,
    wobei das Verfahren:
    Bereitstellen eines ferritisch-austenitischen nichtrostenden Stahls gemäß einem der Ansprüche 1 bis 7,
    Lösungsglühen des Stahls und
    Abkühlen des Stahls umfasst.
EP02707947A 2001-10-30 2002-03-01 Duplexedelstahl Expired - Lifetime EP1446509B9 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DK10075573.5T DK2280089T3 (en) 2001-10-30 2002-03-01 Stainless steel duplex steel
EP10075573.5A EP2280089B1 (de) 2001-10-30 2002-03-01 Duplex rostfreier Stahl

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US1290801A 2001-10-30 2001-10-30
US12908 2001-10-30
PCT/US2002/006366 WO2003038136A1 (en) 2001-10-30 2002-03-01 Duplex stainless steels

Related Child Applications (3)

Application Number Title Priority Date Filing Date
EP10075573.5A Division EP2280089B1 (de) 2001-10-30 2002-03-01 Duplex rostfreier Stahl
EP10075573.5 Division-Into 2010-09-30
EP10075575.0 Division-Into 2010-09-30

Publications (4)

Publication Number Publication Date
EP1446509A1 EP1446509A1 (de) 2004-08-18
EP1446509A4 EP1446509A4 (de) 2005-04-20
EP1446509B1 EP1446509B1 (de) 2012-01-18
EP1446509B9 true EP1446509B9 (de) 2012-08-01

Family

ID=21757316

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10075573.5A Expired - Lifetime EP2280089B1 (de) 2001-10-30 2002-03-01 Duplex rostfreier Stahl
EP02707947A Expired - Lifetime EP1446509B9 (de) 2001-10-30 2002-03-01 Duplexedelstahl

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP10075573.5A Expired - Lifetime EP2280089B1 (de) 2001-10-30 2002-03-01 Duplex rostfreier Stahl

Country Status (20)

Country Link
US (1) US6623569B2 (de)
EP (2) EP2280089B1 (de)
JP (1) JP2005507459A (de)
KR (1) KR100834595B1 (de)
CN (1) CN100392118C (de)
AT (1) ATE541951T1 (de)
AU (1) AU2002242314B2 (de)
BR (1) BR0213436A (de)
CA (1) CA2462963C (de)
DK (2) DK1446509T3 (de)
ES (2) ES2590920T3 (de)
HK (1) HK1070926A1 (de)
IL (2) IL161289A0 (de)
MX (1) MXPA04003768A (de)
NO (2) NO339947B1 (de)
PL (1) PL197902B1 (de)
RU (1) RU2280707C2 (de)
TW (1) TWI318647B (de)
WO (1) WO2003038136A1 (de)
ZA (1) ZA200402965B (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060074400A (ko) * 2004-12-27 2006-07-03 주식회사 포스코 니켈 절감형 고내식성 2상 스테인리스강
US7807028B2 (en) * 2005-03-09 2010-10-05 Xstrata Queensland Limited Stainless steel electrolytic plates
US8313691B2 (en) 2007-11-29 2012-11-20 Ati Properties, Inc. Lean austenitic stainless steel
WO2009082498A1 (en) 2007-12-20 2009-07-02 Ati Properties, Inc. Austenitic stainless steel low in nickel containing stabilizing elements
MX2010005668A (es) 2007-12-20 2010-06-03 Ati Properties Inc Acero inoxidable austenitico delgado resistente a la corrosion.
US8337749B2 (en) 2007-12-20 2012-12-25 Ati Properties, Inc. Lean austenitic stainless steel
FI125458B (fi) * 2008-05-16 2015-10-15 Outokumpu Oy Ruostumaton terästuote, tuotteen käyttö ja menetelmä sen valmistamiseksi
US20110160838A1 (en) * 2009-12-31 2011-06-30 Blanzy Jeffrey S Endoprosthesis containing multi-phase ferrous steel
US8888838B2 (en) 2009-12-31 2014-11-18 W. L. Gore & Associates, Inc. Endoprosthesis containing multi-phase ferrous steel
FI122657B (fi) 2010-04-29 2012-05-15 Outokumpu Oy Menetelmä korkean muokattavuuden omaavan ferriittis-austeniittisen ruostumattoman teräksen valmistamiseksi ja hyödyntämiseksi
KR20120132691A (ko) 2010-04-29 2012-12-07 오또꿈뿌 오와이제이 높은 성형성을 구비하는 페라이트-오스테나이트계 스테인리스 강의 제조 및 사용 방법
KR20130034349A (ko) 2011-09-28 2013-04-05 주식회사 포스코 내식성 및 열간가공성이 우수한 저합금 듀플렉스 스테인리스강
KR101312783B1 (ko) 2011-09-28 2013-09-27 주식회사 포스코 충격인성 및 코일 형상이 우수한 슈퍼 듀플렉스 스테인리스강의 연속소둔방법
UA111115C2 (uk) 2012-04-02 2016-03-25 Ейкей Стіл Пропертіс, Інк. Рентабельна феритна нержавіюча сталь
FI125466B (en) * 2014-02-03 2015-10-15 Outokumpu Oy DUPLEX STAINLESS STEEL
FI126577B (en) 2014-06-17 2017-02-28 Outokumpu Oy DUPLEX STAINLESS STEEL
CN105861951B (zh) * 2016-06-07 2017-11-03 东北特钢集团大连特殊钢有限责任公司 镍不锈钢超大规格连铸坯制造方法

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1080886A (en) 1965-06-22 1967-08-23 Avesta Jernverks Ab Rollable and weldable stainless steel
US3736131A (en) 1970-12-23 1973-05-29 Armco Steel Corp Ferritic-austenitic stainless steel
JPS5441214A (en) * 1977-09-08 1979-04-02 Nippon Yakin Kogyo Co Ltd Twoophase highhstrength stainless steel
JPS56119721A (en) * 1980-02-25 1981-09-19 Sumitomo Metal Ind Ltd Solid solution treatment of two-phase stainless steel
SE430904C (sv) 1980-05-13 1986-04-06 Asea Ab Rostfritt, ferrit-austenitiskt stal framstellt av pulver
CA1242095A (en) 1984-02-07 1988-09-20 Akira Yoshitake Ferritic-austenitic duplex stainless steel
SE451465B (sv) 1984-03-30 1987-10-12 Sandvik Steel Ab Ferrit-austenitiskt rostfritt stal mikrolegerat med molybden och koppar och anvendning av stalet
SE459185B (sv) * 1987-10-26 1989-06-12 Sandvik Ab Ferrit-martensitiskt rostfritt staal med deformationsinducerad martensitfas
US4828630A (en) 1988-02-04 1989-05-09 Armco Advanced Materials Corporation Duplex stainless steel with high manganese
JPH0768603B2 (ja) * 1989-05-22 1995-07-26 新日本製鐵株式会社 建築建材用二相ステンレス鋼
US4985091A (en) * 1990-01-12 1991-01-15 Carondelet Foundry Company Corrosion resistant duplex alloys
JP2500162B2 (ja) 1991-11-11 1996-05-29 住友金属工業株式会社 耐食性に優れた高強度二相ステンレス鋼
JPH07138704A (ja) 1993-11-12 1995-05-30 Nisshin Steel Co Ltd 高強度高延性複相組織ステンレス鋼およびその製造方法
JP2783504B2 (ja) 1993-12-20 1998-08-06 神鋼鋼線工業株式会社 ステンレス鋼線状体
US5672215A (en) * 1994-12-16 1997-09-30 Sumitomo Metal Industries, Ltd. Duplex stainless steel excellent in corrosion resistance
JP3241263B2 (ja) * 1996-03-07 2001-12-25 住友金属工業株式会社 高強度二相ステンレス鋼管の製造方法
JPH09302446A (ja) * 1996-05-10 1997-11-25 Daido Steel Co Ltd 二相ステンレス鋼
JPH101022A (ja) * 1996-06-14 1998-01-06 Araco Corp シートベルトにおける架け渡し高さ調節装置
JPH10102206A (ja) * 1996-09-27 1998-04-21 Kubota Corp 高耐食・高腐食疲労強度二相ステンレス鋼
FR2765243B1 (fr) * 1997-06-30 1999-07-30 Usinor Acier inoxydable austenoferritique a tres bas nickel et presentant un fort allongement en traction
FR2766843B1 (fr) * 1997-07-29 1999-09-03 Usinor Acier inoxydable austenitique comportant une tres faible teneur en nickel
JP3508095B2 (ja) 1999-06-15 2004-03-22 株式会社クボタ 耐熱疲労性・耐腐食疲労性およびドリル加工性等に優れたフェライト−オーステナイト二相ステンレス鋼および製紙用サクションロール胴部材
SE517449C2 (sv) 2000-09-27 2002-06-04 Avesta Polarit Ab Publ Ferrit-austenitiskt rostfritt stål

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NO344633B1 (no) 2020-02-17
ATE541951T1 (de) 2012-02-15
EP1446509B1 (de) 2012-01-18
ES2395118T3 (es) 2013-02-08
MXPA04003768A (es) 2004-07-30
NO20161860A1 (no) 2004-05-27
RU2004116332A (ru) 2005-06-10
NO20042201L (no) 2004-05-27
ZA200402965B (en) 2012-09-26
TWI318647B (en) 2009-12-21
US20030084971A1 (en) 2003-05-08
RU2280707C2 (ru) 2006-07-27
EP2280089A1 (de) 2011-02-02
PL368180A1 (en) 2005-03-21
DK2280089T3 (en) 2016-11-07
KR20040078100A (ko) 2004-09-08
CA2462963C (en) 2009-10-13
CA2462963A1 (en) 2003-05-08
CN1578843A (zh) 2005-02-09
HK1070926A1 (en) 2005-06-30
NO339947B1 (no) 2017-02-20
AU2002242314C1 (en) 2003-05-12
CN100392118C (zh) 2008-06-04
KR100834595B1 (ko) 2008-06-02
DK1446509T3 (da) 2012-04-10
EP2280089B1 (de) 2016-08-10
WO2003038136A1 (en) 2003-05-08
EP1446509A1 (de) 2004-08-18
BR0213436A (pt) 2004-11-09
JP2005507459A (ja) 2005-03-17
EP1446509A4 (de) 2005-04-20
IL161289A0 (en) 2004-09-27
PL197902B1 (pl) 2008-05-30
IL161289A (en) 2007-07-24
US6623569B2 (en) 2003-09-23
AU2002242314A2 (en) 2003-05-12
ES2590920T3 (es) 2016-11-24

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